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Atish Patra 7cd1af107a
riscv: Trace irq on only interrupt is enabled 
We should call irq trace only if interrupt is going to be enabled during
excecption handling. Otherwise, it results in following warning during
boot with lock debugging enabled.

[    0.000000] ------------[ cut here ]------------
[    0.000000] DEBUG_LOCKS_WARN_ON(early_boot_irqs_disabled)
[    0.000000] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:4085 lockdep_hardirqs_on_prepare+0x22a/0x22e
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.10.0-00022-ge20097fb37e2-dirty #548
[    0.000000] epc: c005d5d4 ra : c005d5d4 sp : c1c01e80
[    0.000000]  gp : c1d456e0 tp : c1c0a980 t0 : 00000000
[    0.000000]  t1 : ffffffff t2 : 00000000 s0 : c1c01ea0
[    0.000000]  s1 : c100f360 a0 : 0000002d a1 : c00666ee
[    0.000000]  a2 : 00000000 a3 : 00000000 a4 : 00000000
[    0.000000]  a5 : 00000000 a6 : c1c6b390 a7 : 3ffff00e
[    0.000000]  s2 : c2384fe8 s3 : 00000000 s4 : 00000001
[    0.000000]  s5 : c1c0a980 s6 : c1d48000 s7 : c1613b4c
[    0.000000]  s8 : 00000fff s9 : 80000200 s10: c1613b40
[    0.000000]  s11: 00000000 t3 : 00000000 t4 : 00000000
[    0.000000]  t5 : 00000001 t6 : 00000000

Fixes: 3c46979829 ("riscv:Enable LOCKDEP_SUPPORT & fixup TRACE_IRQFLAGS_SUPPORT")

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-01-12 20:16:35 -08:00
arch riscv: Trace irq on only interrupt is enabled 2021-01-12 20:16:35 -08:00
block SCSI fixes on 20210101 2021-01-01 12:58:07 -08:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto crypto: aegis128 - avoid spurious references crypto_aegis128_update_simd 2020-12-04 18:16:53 +11:00
Documentation A small set of late-arriving, small documentation fixes. 2020-12-24 14:20:33 -08:00
drivers riscv: Fix sifive serial driver 2021-01-07 18:02:13 -08:00
fs block-5.11-2021-01-01 2021-01-01 12:49:09 -08:00
include SCSI fixes on 20210101 2021-01-01 12:58:07 -08:00
init kasan, arm64: only use kasan_depth for software modes 2020-12-22 12:55:07 -08:00
ipc Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
kernel io_uring-5.11-2021-01-01 2021-01-01 12:29:49 -08:00
lib zlib: move EXPORT_SYMBOL() and MODULE_LICENSE() out of dfltcc_syms.c 2020-12-29 15:36:49 -08:00
LICENSES LICENSES: Add the CC-BY-4.0 license 2020-12-08 10:33:27 -07:00
mm mm: slub: call account_slab_page() after slab page initialization 2020-12-29 15:36:49 -08:00
net libceph: align session_key and con_secret to 16 bytes 2020-12-28 20:34:33 +01:00
samples ARM: SoC drivers for v5.11 2020-12-16 16:38:41 -08:00
scripts depmod: handle the case of /sbin/depmod without /sbin in PATH 2021-01-01 12:26:39 -08:00
security Provide a fix for the incorrect handling of privilege 2020-12-24 14:08:43 -08:00
sound sound fixes for 5.11-rc1 2020-12-23 15:11:08 -08:00
tools selftests/vm: fix building protection keys test 2020-12-29 15:36:49 -08:00
usr Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
virt ARM: 2020-12-20 10:44:05 -08:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore .gitignore: docs: ignore sphinx_*/ directories 2020-09-10 10:44:31 -06:00
.mailmap RDMA 5.11 pull request 2020-12-16 13:42:26 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-12-11 22:29:38 -08:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Merge branches 'pm-cpufreq' and 'pm-cpuidle' 2021-01-02 10:16:32 +01:00
Makefile Linux 5.11-rc2 2021-01-03 15:55:30 -08:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.